util: add reference to content-disposition support
util: add reference to content-disposition support

beancount/fava,beancount/fava,yagebu/fava,yagebu/fava,aumayr/beancount-web,aumayr/beancount-web,beancount/fava,beancount/fava,aumayr/beancount-web,yagebu/fava,beancount/fava,aumayr/beancount-web,yagebu/fava,yagebu/fava